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Audacity Models Pantera 50 - Tiger 50 > RADIO AND SERVO, GYRO SUGGESTIONS FOR NEWBIE?
 
 
huey nut
Senior Heliman
Location: DRIPPING springs texas

SEEKING ADVICE FOR THE RADIO SERVOS ON WHAT POINTS AND GYRO SUGGESTIONS FOR A TIGER 50 SET UP FOR A FIRST TIME FLYIER? BASIC RADIO FOR HOVERING AND FORWARD FLIGHT NOTHING 3D AT ALL. RADIO WILL BE USED FOR THIS HELI ONLY, sorry dang caps stuck would you go with the wood blades or get carbon fibers right away?
10-28-2005 Over year old.
 
 
darkfa8
Key Veteran
Location: Eatontown, NJ, USA

Radio: Futaba 7CHF (this radio can transmit in FM or PCM, the 7CHP model comes with a PCM capable receiver and is a bit more money) w/ four S3151 digital servos ($279.99 towerhobbies.com), the Futaba 6EXH with four S3151 digital servos ($199.99 towerhobbies.com) or JR 6102 w/ four S537DS digital servos ($299 horizonhobby.com).. btw, Tower is running a discount program too...

Both brands have been around a long time. My personal preference is the Futaba since I've used their products since the early 1990's when I was into RC cars. However, I did have a JR radio at one point and I especially liked the ergonomic way it felt in my hands. I've since handled a 9303 and they seem to have retained that nice ergonomic field. I currently use a 9CHP.

These radios, while having the capability of storing more models are both computerized which makes setting things up much easier. They're both very popular, prevalent and easy to use. I've looked at Airtronic's radios and I just wasn't enthusiastic by the non-intuitive menu system. People who have used Airtronics for a long time obviously "get it" more quickly then a JR or Futaba user.

The Futaba 6EXH is a very paired down heli radio and offers very basic functions, only two flight modes (normal and one idle-up) and a Throttle Hold for autos. Yes, it's cheap but in my opinion, the interface and overall prevalence of the 7CHP or 6102 is worth the extra $80-$90.

If you can afford it, getting digital servos, especially for the eCCPM type of mixing the Tiger has will benefit you in several ways. First of all, the digital servos have a quicker response and bettery overall accuracy, this includes good centering compaired to the cheaper analog servos. Since the servos are all tied to the swash plate with 2 direct links and one 2-piece linkage on the elevator, having a accurate servo is important since they all work in unison. The standard digitals that come with the radios I listed above are perfect for this application. You can also tailor their responsiveness if you feel they're too twitchy for you around center by dialing in some Exponential percentage. This will soften their response around center but still give you complete authority if you want to get aggressive.

Gyro: I'm not as familiar with JR's gyros as I am with the Futaba line, but the most popular Futaba is the GY401 ($219.99 towerhobbies.com) and it comes with the venearable S9254 digital servo. The GY401, while slightly more expensive then the 201 version has better centering, it better suited to trying backwards flight without having the tail blow out, it's well packaged, easy to setup and operate and if you do decide to change to something else.. which most people don't, it has great resale value.

I know some people like the CSM series of gyros, and I haven't checked their latest designs, but last I saw they were just very bulky in comparison to the Futaba gy401.

Investing in quality electronics will pay off with ease of use, other pilots being able to set things up and resale value.

Blades: While carbon blades are touted as a "must have", wood blades will take you into mild 3D and can handle the stress. So, if you're not headed towards 3D, woodies will last you a long time. If you start getting very aggressive in aerobatic routines the carbons will help make the manuevers more crisp since they're obviously more resiliant and stiff compaired to the wood blades.

A good upgrade after you get some flight time are a good set of carbon tail blades. The plastic ones do the job, but are flimsy in comparison. The carbons give excellent tail authority and really allow you to see how well the gyro is doing it's job. Combine that with the Tiger's designed-in high gear ratio for the tail and it has the most tail authority in it's class. 92mm and 95mm blades will fit the Tiger. I run 95mm NHP Pros ($25).

All of this stuff you can save money on if you search through the classifieds on here or put up a wanted ad. You can also check a few other web site classifieds (rcuniverse, rcgroups, helifreak or even on Ebay)

You can get all of this stuff, including blades for 30-40% or more off retail if you just search around.

Also, if it is a concern you can mix and match Futaba radios with JR gyros/servos or vice-versa.

- Dan G. -
10-29-2005 Over year old.
HOMEPAGE  
 
 
huey nut
Senior Heliman
Location: DRIPPING springs texas

thanks alot for all the info dan
10-29-2005 Over year old.
 
 
jvanscoyk
Veteran
Location: Tucson, AZ

My personal radio of choice is the JR 9303.

I've been flying my 4 helis with the 9303 for the last 8 months.
I've helped a friend setup his machines on a Futaba 7CHP. While I agree it is a fine radio, after using my 9303, the 7CHP was a pain in the butt to figure out.

What I liked about the 9303 was that all the programming that you would adjust can be found in one menu. With the 7CHP I found myself going through several menus to get to what I need to adjust,

My profession is in the IT field. As a "geek" I find the menus on the 9303 more in line with many menus that you find in a typical windows application. The logic of the menus just seem to make more sense.


As for JR gyros, the G500T is almost identical to the Futaba GY401.
They setup the same, are about the same footprint and weight. The biggest difference that I know (because I own both of them) is that the GY401 has to be started up in heading hold mode for it to calibrate properly where as the G500T does not for it to calibrate properly. The JR 8700G is a very nice servo but a bit pricey. I also have a DS810G servo and it seems to work fine also.

The beauty of a CCPM machine is that the servos do not have to be a high quality digital (expensive) servo. Decent servos above 40oz torque on each one for the 3 swashplate servos are all that's needed. As long as the servos center well you are good to go.

So with whatever radio you decide to go with I would recommend the following:

1) At least 7 channels for possible future expansion
2) PCM for better rf noise rejection and fail safe function
3) Decent inexpensive servos
4) 1800mah or bigger battery
5) Gy401 or G500T Gyro


My intent was not to badmouth any Futaba product but to express my opinions on what I have experience in.


Jim

must go faster, must go faster.........
10-30-2005 Over year old.
HOMEPAGE  
 
 
darkfa8
Key Veteran
Location: Eatontown, NJ, USA

hey Jim

I wish the 7C/9C was more curvacious like the JR, but I wish the JR didn't have that dumb analog trim for the throttle/collective. What's up with that?

Also, a friend of mine has a 9303, the one I checked out and he said the two potentiometers on the sides can't be disabled. Is this true?

Other then those two subjective gripes, I really like JR's products.

I didn't play with the JR's menus, but I do agree that the 7C menus are so so...I did have to refer to the manual several times fo setup and but is certainly more intuitive then Airtronics' version...The 9C menus are an improvement. I'll have to check out my buddy's JR again.

My first radio was a 2-channel Futaba Attack for my frequently crashed Tamiya Striker rc car :P

- Dan G. -
10-30-2005 Over year old.
HOMEPAGE  
 
 
jvanscoyk
Veteran
Location: Tucson, AZ

Hey Dn,

The side trimmers can be disabled. They can to be disabled in the menu where you select which model you want to fly.

If anyone needs assistance just PM me and I'll walk you through the short procedure.

As for the analog trimmer on the trottle stick I guess I'm used to it and prefer it instead of the throttle cut switch that Futaba uses. The 8103 and PCM 10x have the same arrangement.

Jim

must go faster, must go faster.........
10-30-2005 Over year old.
HOMEPAGE  
 
 
darkfa8
Key Veteran
Location: Eatontown, NJ, USA

Jim,

So you use the JR's analog Throttle/Collective trim as a manual throttle cut?

The Futaba has a digtal mometary on/off button/slider for all the trims and yes, the assignable Throttle Cut switch..

- Dan G. -
10-31-2005 Over year old.
HOMEPAGE  
 
 
jvanscoyk
Veteran
Location: Tucson, AZ

Dan,

Yes I used it as a trim as well as a kill.

The trim only effects throttle and not collective and is effective for idle only.


Jim

must go faster, must go faster.........
10-31-2005 Over year old.
HOMEPAGE  
 
 
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Audacity Models Pantera 50 - Tiger 50 > RADIO AND SERVO, GYRO SUGGESTIONS FOR NEWBIE?
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